144555889 has 4 divisors (see below), whose sum is σ = 145241200. Its totient is φ = 143870580.

The previous prime is 144555877. The next prime is 144555907. The reversal of 144555889 is 988555441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 988555441 = 27983 ⋅35327.

It is a cyclic number.

It is not a de Polignac number, because 144555889 - 2¹¹ = 144553841 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (144555869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 342339 + ... + 342760.

It is an arithmetic number, because the mean of its divisors is an integer number (36310300).

Almost surely, 2^144555889 is an apocalyptic number.

It is an amenable number.

144555889 is a deficient number, since it is larger than the sum of its proper divisors (685311).

144555889 is an equidigital number, since it uses as much as digits as its factorization.

144555889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685310.

The product of its digits is 1152000, while the sum is 49.

The square root of 144555889 is about 12023.1397313680. The cubic root of 144555889 is about 524.8218763828.

The spelling of 144555889 in words is "one hundred forty-four million, five hundred fifty-five thousand, eight hundred eighty-nine".